Implicit and Explicit Conceptual Memory Following Frontal Lobe Damage
Implicit and Explicit Conceptual Memory Following Frontal Lobe Damage Felicia B. Gershberg Boston University School of Medicine and Department of Veterans Affairs Medical Center Downloaded from http://mitprc.silverchair.com/jocn/article-pdf/9/1/105/1755413/jocn.1997.9.1.105.pdf by guest on 18 May 2021 Abstract In two experiments, the performance of patients with fron- and associatecued recall tests. The findings of normal perfor- tal lobe lesions was examined on implicit and explicit tests of mance on implicit conceptual tests suggest that frontal patients conceptual memory for organized lists of words. Frontal pa- do not have a basic deficit in semantic processing of individual tients exhibited normal levels of conceptual priming on im- items. Impaired performance on explicit cued recall tests may plicit category production and free association tests, but they be related to deficits in the use of organizational encoding and exhibited impaired memory performance on explicit category- strategic retrieval processes. H INTRODUCTION prefrontal cortex in controlling working memory (e.g., Baddeley, 1986; Fuster, 1990; Goldman-Rakic, 1987; Damage to the frontal lobes results in memory impair- Moscovitch, 1993; Shimamura, 1994). In addition, func- ment across a variety of tasks, including tests of immedi- tional imaging studies have revealed activation of pre- ate memory span, memory for temporal and source frontal cortex during tasks that require executive control information, and metamemory aanowsky, Shimamura, of working memory (e.g., D’Esposito, Detre, Alsop, Lis- Kritchevsky, & Squire, 1989a; Janowsky, Shimamura, & terud, Atlas, & Grossman, 1994;Petrides, Alivisatos, Evans, Squire, 1989b; McAndrews & Milner, 1991; Milner, & Meyer, 1993;Petrides, Alivisatos, Meyer, & Evans, 1993).
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